A320 flight crew reported a loss of the Captain's PFD and ND on final approach with an electrical smell and smoke noticeable in the cockpit. The flight crew donned O2 masks and continued to destination airport where a maintenance inspection discovered wiring issues.
Synopsis
A320 flight crew reported a loss of the Captain's PFD and ND on final approach with an electrical smell and smoke noticeable in the cockpit. The flight crew donned O2 masks and continued to destination airport where a maintenance inspection discovered wiring issues.
Narrative
Just prior to turning downwind at 9000 ft. on the ZZZZZ arrival for XXR; the Captain had their Primary Flight Display (PFD) and Multi-function Flight Display (MFD) flicker off and back on. They mentioned this to me and after I looked over and began to smell a burning smell that quickly intensified. I also noticed what appeared to be some haze potentially from smoke. The Captain retained control of the aircraft and we immediately donned our oxygen masks and I began working the QRC. We then had a frequency change and I checked in [to advise ATC]. The Controller tried to change our runway to XXL but we elected to land on XXR which we had previously briefed and to avoid adding to our workload. We landed without further incident and the fumes seemed to clear. The Airport Rescue and Firefighting (ARFF) evaluated our aircraft for hot spots which didn't exist and we taxied to the gate where they made further checks. After the event; Maintenance found a burned wire and also replaced the Captain PFD.
Second reporter narrative
On descent into ZZZ on Aircraft X; and passing through approximately 9000 ft.; I had on the Captain's side Primary Flight Display (PFD) (while I was flying) go completely black. Then the PFD appeared on the side of the NAV display and the NAV display appeared on the side of the PFD. Soon after that; the First Officer (FO) and I smelled a very strong electrical burning smell. We both donned our oxygen masks. We [advised ATC] and ran the appropriate QRC checklist for smoke & fumes. There was a haze in the flight deck near the Captain's side of the aircraft. We rolled the Airport Rescue and Firefighting (ARFF). The Flight Attendants (FAs) were notified. ATC asked us for the total souls on board and fuel remaining. I landed uneventfully on Runway XXR (the runway we were set up for and previously given). We cleared the runway and the ARFF checked the aircraft for hot spots. No hot spots were found. I took off my oxygen mask to check the flight deck fumes and it seemed that the fumes had dissipated. I made an announcement to the passengers and we taxied to the gate. The fire trucks followed us to the gate. Once we arrived at the gate; both the FO and I opened our windows and ran the shutdown checklist. The Lead Fire Fighter came on the flight deck and checked the flight deck temperature with a hand held device and said it appeared that the temperatures were normal in the flight deck. The Fire Fighter gave the FO and I a 'fist bump' and said great job. It was brought to my attention that maintenance took the aircraft out of service and later found 'broken wires' and replaced these wires. Better inspections could be helpful.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.